nixos/mysql: minor cleanup and formatting
This commit is contained in:
Aaron Andersen
parent
a96f6ef187
commit
d621ad09a8
1 changed files with 172 additions and 176 deletions
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@ -62,7 +62,7 @@ in
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Group account under which MySQL runs.
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<note><para>
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If left as the default value this user will automatically be created
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If left as the default value this group will automatically be created
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on system activation, otherwise you are responsible for
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ensuring the user exists before the MySQL service starts.
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</para></note>
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@ -283,7 +283,7 @@ in
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};
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masterPort = mkOption {
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type = types.int;
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type = types.port;
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default = 3306;
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description = "Port number on which the MySQL master server runs.";
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};
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@ -295,7 +295,7 @@ in
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###### implementation
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config = mkIf config.services.mysql.enable {
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config = mkIf cfg.enable {
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services.mysql.dataDir =
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mkDefault (if versionAtLeast config.system.stateVersion "17.09" then "/var/lib/mysql"
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@ -334,192 +334,188 @@ in
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environment.etc."my.cnf".source = cfg.configFile;
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systemd.services.mysql = let
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hasNotify = isMariaDB;
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in {
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description = "MySQL Server";
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systemd.services.mysql = {
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description = "MySQL Server";
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after = [ "network.target" ];
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wantedBy = [ "multi-user.target" ];
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restartTriggers = [ cfg.configFile ];
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after = [ "network.target" ];
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wantedBy = [ "multi-user.target" ];
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restartTriggers = [ cfg.configFile ];
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unitConfig.RequiresMountsFor = "${cfg.dataDir}";
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unitConfig.RequiresMountsFor = cfg.dataDir;
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path = [
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# Needed for the mysql_install_db command in the preStart script
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# which calls the hostname command.
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pkgs.nettools
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];
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path = [
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# Needed for the mysql_install_db command in the preStart script
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# which calls the hostname command.
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pkgs.nettools
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];
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preStart = if isMariaDB then ''
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if ! test -e ${cfg.dataDir}/mysql; then
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${cfg.package}/bin/mysql_install_db --defaults-file=/etc/my.cnf ${mysqldOptions}
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touch ${cfg.dataDir}/mysql_init
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preStart = if isMariaDB then ''
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if ! test -e ${cfg.dataDir}/mysql; then
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${cfg.package}/bin/mysql_install_db --defaults-file=/etc/my.cnf ${mysqldOptions}
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touch ${cfg.dataDir}/mysql_init
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fi
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'' else ''
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if ! test -e ${cfg.dataDir}/mysql; then
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${cfg.package}/bin/mysqld --defaults-file=/etc/my.cnf ${mysqldOptions} --initialize-insecure
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touch ${cfg.dataDir}/mysql_init
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fi
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'';
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script = ''
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# https://mariadb.com/kb/en/getting-started-with-mariadb-galera-cluster/#systemd-and-galera-recovery
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if test -n "''${_WSREP_START_POSITION}"; then
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if test -e "${cfg.package}/bin/galera_recovery"; then
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VAR=$(cd ${cfg.package}/bin/..; ${cfg.package}/bin/galera_recovery); [[ $? -eq 0 ]] && export _WSREP_START_POSITION=$VAR || exit 1
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fi
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'' else ''
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if ! test -e ${cfg.dataDir}/mysql; then
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${cfg.package}/bin/mysqld --defaults-file=/etc/my.cnf ${mysqldOptions} --initialize-insecure
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touch ${cfg.dataDir}/mysql_init
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fi
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'';
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fi
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script = ''
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# https://mariadb.com/kb/en/getting-started-with-mariadb-galera-cluster/#systemd-and-galera-recovery
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if test -n "''${_WSREP_START_POSITION}"; then
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if test -e "${cfg.package}/bin/galera_recovery"; then
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VAR=$(cd ${cfg.package}/bin/..; ${cfg.package}/bin/galera_recovery); [[ $? -eq 0 ]] && export _WSREP_START_POSITION=$VAR || exit 1
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fi
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fi
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# The last two environment variables are used for starting Galera clusters
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exec ${cfg.package}/bin/mysqld --defaults-file=/etc/my.cnf ${mysqldOptions} $_WSREP_NEW_CLUSTER $_WSREP_START_POSITION
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'';
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# The last two environment variables are used for starting Galera clusters
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exec ${cfg.package}/bin/mysqld --defaults-file=/etc/my.cnf ${mysqldOptions} $_WSREP_NEW_CLUSTER $_WSREP_START_POSITION
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'';
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postStart = let
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# The super user account to use on *first* run of MySQL server
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superUser = if isMariaDB then cfg.user else "root";
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in ''
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${optionalString (!isMariaDB) ''
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# Wait until the MySQL server is available for use
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count=0
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while [ ! -e /run/mysqld/mysqld.sock ]
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do
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if [ $count -eq 30 ]
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then
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echo "Tried 30 times, giving up..."
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exit 1
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fi
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postStart = let
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# The super user account to use on *first* run of MySQL server
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superUser = if isMariaDB then cfg.user else "root";
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in ''
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${optionalString (!hasNotify) ''
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# Wait until the MySQL server is available for use
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count=0
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while [ ! -e /run/mysqld/mysqld.sock ]
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do
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if [ $count -eq 30 ]
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then
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echo "Tried 30 times, giving up..."
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exit 1
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fi
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echo "MySQL daemon not yet started. Waiting for 1 second..."
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count=$((count++))
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sleep 1
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done
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''}
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echo "MySQL daemon not yet started. Waiting for 1 second..."
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count=$((count++))
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sleep 1
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done
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''}
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if [ -f ${cfg.dataDir}/mysql_init ]
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then
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# While MariaDB comes with a 'mysql' super user account since 10.4.x, MySQL does not
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# Since we don't want to run this service as 'root' we need to ensure the account exists on first run
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( echo "CREATE USER IF NOT EXISTS '${cfg.user}'@'localhost' IDENTIFIED WITH ${if isMariaDB then "unix_socket" else "auth_socket"};"
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echo "GRANT ALL PRIVILEGES ON *.* TO '${cfg.user}'@'localhost' WITH GRANT OPTION;"
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) | ${cfg.package}/bin/mysql -u ${superUser} -N
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if [ -f ${cfg.dataDir}/mysql_init ]
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then
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# While MariaDB comes with a 'mysql' super user account since 10.4.x, MySQL does not
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# Since we don't want to run this service as 'root' we need to ensure the account exists on first run
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( echo "CREATE USER IF NOT EXISTS '${cfg.user}'@'localhost' IDENTIFIED WITH ${if isMariaDB then "unix_socket" else "auth_socket"};"
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echo "GRANT ALL PRIVILEGES ON *.* TO '${cfg.user}'@'localhost' WITH GRANT OPTION;"
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) | ${cfg.package}/bin/mysql -u ${superUser} -N
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${concatMapStrings (database: ''
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# Create initial databases
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if ! test -e "${cfg.dataDir}/${database.name}"; then
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echo "Creating initial database: ${database.name}"
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( echo 'create database `${database.name}`;'
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${optionalString (database.schema != null) ''
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echo 'use `${database.name}`;'
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# TODO: this silently falls through if database.schema does not exist,
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# we should catch this somehow and exit, but can't do it here because we're in a subshell.
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if [ -f "${database.schema}" ]
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then
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cat ${database.schema}
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elif [ -d "${database.schema}" ]
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then
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cat ${database.schema}/mysql-databases/*.sql
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fi
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''}
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) | ${cfg.package}/bin/mysql -u ${superUser} -N
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fi
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'') cfg.initialDatabases}
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${optionalString (cfg.replication.role == "master")
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''
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# Set up the replication master
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( echo "use mysql;"
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echo "CREATE USER '${cfg.replication.masterUser}'@'${cfg.replication.slaveHost}' IDENTIFIED WITH mysql_native_password;"
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echo "SET PASSWORD FOR '${cfg.replication.masterUser}'@'${cfg.replication.slaveHost}' = PASSWORD('${cfg.replication.masterPassword}');"
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echo "GRANT REPLICATION SLAVE ON *.* TO '${cfg.replication.masterUser}'@'${cfg.replication.slaveHost}';"
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) | ${cfg.package}/bin/mysql -u ${superUser} -N
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''}
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${optionalString (cfg.replication.role == "slave")
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''
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# Set up the replication slave
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( echo "stop slave;"
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echo "change master to master_host='${cfg.replication.masterHost}', master_user='${cfg.replication.masterUser}', master_password='${cfg.replication.masterPassword}';"
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echo "start slave;"
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) | ${cfg.package}/bin/mysql -u ${superUser} -N
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''}
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${optionalString (cfg.initialScript != null)
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''
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# Execute initial script
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# using toString to avoid copying the file to nix store if given as path instead of string,
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# as it might contain credentials
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cat ${toString cfg.initialScript} | ${cfg.package}/bin/mysql -u ${superUser} -N
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''}
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rm ${cfg.dataDir}/mysql_init
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fi
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${optionalString (cfg.ensureDatabases != []) ''
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(
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${concatMapStrings (database: ''
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echo "CREATE DATABASE IF NOT EXISTS \`${database}\`;"
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'') cfg.ensureDatabases}
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# Create initial databases
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if ! test -e "${cfg.dataDir}/${database.name}"; then
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echo "Creating initial database: ${database.name}"
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( echo 'create database `${database.name}`;'
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${optionalString (database.schema != null) ''
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echo 'use `${database.name}`;'
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# TODO: this silently falls through if database.schema does not exist,
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# we should catch this somehow and exit, but can't do it here because we're in a subshell.
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if [ -f "${database.schema}" ]
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then
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cat ${database.schema}
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elif [ -d "${database.schema}" ]
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then
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cat ${database.schema}/mysql-databases/*.sql
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fi
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''}
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) | ${cfg.package}/bin/mysql -u ${superUser} -N
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fi
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'') cfg.initialDatabases}
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${optionalString (cfg.replication.role == "master")
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''
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# Set up the replication master
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( echo "use mysql;"
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echo "CREATE USER '${cfg.replication.masterUser}'@'${cfg.replication.slaveHost}' IDENTIFIED WITH mysql_native_password;"
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echo "SET PASSWORD FOR '${cfg.replication.masterUser}'@'${cfg.replication.slaveHost}' = PASSWORD('${cfg.replication.masterPassword}');"
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echo "GRANT REPLICATION SLAVE ON *.* TO '${cfg.replication.masterUser}'@'${cfg.replication.slaveHost}';"
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) | ${cfg.package}/bin/mysql -u ${superUser} -N
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''}
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${optionalString (cfg.replication.role == "slave")
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''
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# Set up the replication slave
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( echo "stop slave;"
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echo "change master to master_host='${cfg.replication.masterHost}', master_user='${cfg.replication.masterUser}', master_password='${cfg.replication.masterPassword}';"
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echo "start slave;"
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) | ${cfg.package}/bin/mysql -u ${superUser} -N
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''}
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${optionalString (cfg.initialScript != null)
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''
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# Execute initial script
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# using toString to avoid copying the file to nix store if given as path instead of string,
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# as it might contain credentials
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cat ${toString cfg.initialScript} | ${cfg.package}/bin/mysql -u ${superUser} -N
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''}
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rm ${cfg.dataDir}/mysql_init
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fi
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${optionalString (cfg.ensureDatabases != []) ''
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(
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${concatMapStrings (database: ''
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echo "CREATE DATABASE IF NOT EXISTS \`${database}\`;"
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'') cfg.ensureDatabases}
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) | ${cfg.package}/bin/mysql -N
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''}
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${concatMapStrings (user:
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''
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( echo "CREATE USER IF NOT EXISTS '${user.name}'@'localhost' IDENTIFIED WITH ${if isMariaDB then "unix_socket" else "auth_socket"};"
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${concatStringsSep "\n" (mapAttrsToList (database: permission: ''
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echo "GRANT ${permission} ON ${database} TO '${user.name}'@'localhost';"
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'') user.ensurePermissions)}
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) | ${cfg.package}/bin/mysql -N
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''}
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'') cfg.ensureUsers}
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'';
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${concatMapStrings (user:
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''
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( echo "CREATE USER IF NOT EXISTS '${user.name}'@'localhost' IDENTIFIED WITH ${if isMariaDB then "unix_socket" else "auth_socket"};"
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${concatStringsSep "\n" (mapAttrsToList (database: permission: ''
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echo "GRANT ${permission} ON ${database} TO '${user.name}'@'localhost';"
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'') user.ensurePermissions)}
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) | ${cfg.package}/bin/mysql -N
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'') cfg.ensureUsers}
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'';
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serviceConfig = mkMerge [
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{
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Type = if hasNotify then "notify" else "simple";
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Restart = "on-abort";
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RestartSec = "5s";
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# User and group
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User = cfg.user;
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Group = cfg.group;
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# Runtime directory and mode
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RuntimeDirectory = "mysqld";
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RuntimeDirectoryMode = "0755";
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# Access write directories
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ReadWritePaths = [ cfg.dataDir ];
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# Capabilities
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CapabilityBoundingSet = "";
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# Security
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NoNewPrivileges = true;
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# Sandboxing
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ProtectSystem = "strict";
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ProtectHome = true;
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PrivateTmp = true;
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PrivateDevices = true;
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ProtectHostname = true;
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ProtectKernelTunables = true;
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ProtectKernelModules = true;
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ProtectControlGroups = true;
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RestrictAddressFamilies = [ "AF_UNIX" "AF_INET" "AF_INET6" ];
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LockPersonality = true;
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MemoryDenyWriteExecute = true;
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RestrictRealtime = true;
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RestrictSUIDSGID = true;
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PrivateMounts = true;
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# System Call Filtering
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SystemCallArchitectures = "native";
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}
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(mkIf (cfg.dataDir == "/var/lib/mysql") {
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StateDirectory = "mysql";
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StateDirectoryMode = "0700";
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})
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];
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};
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serviceConfig = mkMerge [
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{
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Type = if isMariaDB then "notify" else "simple";
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Restart = "on-abort";
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RestartSec = "5s";
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# User and group
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User = cfg.user;
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Group = cfg.group;
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# Runtime directory and mode
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RuntimeDirectory = "mysqld";
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RuntimeDirectoryMode = "0755";
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# Access write directories
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ReadWritePaths = [ cfg.dataDir ];
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# Capabilities
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CapabilityBoundingSet = "";
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# Security
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NoNewPrivileges = true;
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# Sandboxing
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ProtectSystem = "strict";
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ProtectHome = true;
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PrivateTmp = true;
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PrivateDevices = true;
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ProtectHostname = true;
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ProtectKernelTunables = true;
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ProtectKernelModules = true;
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ProtectControlGroups = true;
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RestrictAddressFamilies = [ "AF_UNIX" "AF_INET" "AF_INET6" ];
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LockPersonality = true;
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MemoryDenyWriteExecute = true;
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RestrictRealtime = true;
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RestrictSUIDSGID = true;
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PrivateMounts = true;
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# System Call Filtering
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SystemCallArchitectures = "native";
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}
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(mkIf (cfg.dataDir == "/var/lib/mysql") {
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StateDirectory = "mysql";
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StateDirectoryMode = "0700";
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})
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];
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};
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};
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}
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